Oghlangala Castle walls - It is settled on Garatepe Mountain (140 m) in Oghlangala village of Sherur region. Investigations indicate signs of life here at the end of the 1st and at the beginning of the 2nd millennium B.C., while its surviving castle walls belong to the mid-Iron Age. Archaeological findings discovered from Naringala part mainly belong to the mid and late Iron Age. There are some medieval findings as well. Cuneiforms in the monument belong to the 7-8th centuries B.C. There has been also found out a piece of earthenware with some cuneiform on it and several floor layers with white solution belonging to the Iron Age. In some parts of the wall there are rustically shaved stones. This type of stones has been used in the monuments in eastern Anatolia and South Azerbaijan beginning from the 7th century B.C. This evidence affirms that the Oghlangala had been built before that time. Naringala is located in the center of the settlement. It environs 320 sq. km area. Its walls have been fastened with semicircular and uneven zigzags. There are stones weighing more than a few tones in the fortification. Height of the walls reaches 3 m in some parts. There are remnants of a four-cornered building joint within the castle walls. Investigations have been mainly held in Naringala part of the castle. It has been figured out that cultural layer goes on till 5.4 m depth depending on the relief. A hall with pillars was discovered in 1988-89. The hall was cleaned and new pillar bottoms were revealed during the works. There had been other buildings and semicircular watch towers built from air-bricks on the castle walls. Several restoration works and signs of destruction prove that the castle has witnessed heavy battles against strangers.